<template>
  <view class="goods-item">
    <!-- 商品左侧图片区域 -->
    <view class="goods-item-left">
      <radio @click="radioClickHandler" v-if="showRadio" :checked="goods.goods_state" color="#c00000"></radio>
      <image :src="goods.goods_small_logo || defaultPic" class="goods-pic"></image>
    </view>
    <!-- 商品右侧信息区域 -->
    <view class="goods-item-right">
      <!-- 商品标题 -->
      <view class="goods-name">{{ goods.goods_name }}</view>
      <view class="goods-info-box">
        <!-- 商品价格 >> 封装一个过滤器，价格精确到小数点以后两位 -->
        <view class="goods-price">￥{{ goods.goods_price | toFixed }}</view>
        <!-- 商品数量选择的组件 -->
        <uni-number-box @change="numChange" v-if="showNumberBox" :min="1" :value="goods.goods_count"></uni-number-box>
      </view>
    </view>
  </view>
</template>

<script>
export default {
  name: 'my-goods',
  props: {
    goods: Object,
    showRadio: {
      type: Boolean,
      default: false
    },
    showNumberBox: {
      type: Boolean,
      default: false
    }
  },
  filters: {
    toFixed(value) {
      // 价格精确到小数点后两位
      return Number(value).toFixed(2);
    }
  },
  data() {
    return {
      // 默认的空图片
      defaultPic: 'https://img3.doubanio.com/f/movie/8dd0c794499fe925ae2ae89ee30cd225750457b4/pics/movie/celebrity-default-medium.png'
    };
  },
  methods: {
    numChange(val) {
      // val修改数据以后真实的数量值
      // 通知父组件修改vuex里面cart的数据即可
      this.$emit('num-change', {
        goods_id: this.goods.goods_id,
        // 获取到的最新的val转化成number类型
        goods_count: +val
      });
    },
    radioClickHandler() {
      // 一定要把当前的数据传递出去用于修改vuex里面当前商品的goods_state
      this.$emit('radio-change', {
        goods_id: this.goods.goods_id,
        goods_state: !this.goods.goods_state
      });
    }
  }
};
</script>

<style lang="scss">
.goods-item {
  display: flex;
  padding: 10px 5px;
  border-bottom: 1px solid #f0f0f0;

  .goods-item-left {
    margin-right: 5px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    .goods-pic {
      width: 100px;
      height: 100px;
      display: block;
    }
  }

  .goods-item-right {
    display: flex;
    flex-direction: column;
    justify-content: space-between;

    .goods-name {
      font-size: 13px;
    }

    .goods-info-box {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .goods-price {
      font-size: 16px;
      color: #c00000;
    }
  }
}
</style>
